Bottle-cap.



E. L. BLAKESLEE.

BOTTLE CAP.

APPLICATION FILED NOV. 27. 1914 1,1 58,622. Patented Nov. 2, 1915.

III-III INVENTOR.

A T'TORNE Y WITNESSES EVERETT L. BLAKESLEE, or PORTLAND, OREGON.

BOTTLE-CAP.

Specification of Letters Patent.

Patented Nov. 2, 1915.

Application filed November 27, 1914. Serial No. 874,247.

To all whom it may concern Be it known that I, EVERETT L.BLAK.ES- L'nn, a citizen of the United States, residing at Portland, in the county of Multnomah, State of Oregon, have invented certain new and useful Improvements in Bottle-Caps, of which the following is a specification.

My invention relates to caps for use upon milk bottles and other similar receptacles, and the objects I have in view are First: to provide a cap which shall so cover the mouth of the bottle, over which the contained liquid must be poured when emptying, as to protect said mouth from all extraneous'matter and keep same always clean and sanitary while capped. Second: to provide a cap which shall present a smooth exterior, havin-g no depressions to receive and retain extraneous matter either liquid or otherwise. Third: to provide a cap which will cork the bottlesecurely. Fourth: to provide means whereby the corking portion of the cap may be somewhat elastic or yielding inform, and thereby. adapted to readily conform to the bottle neck, should same be of slightly varying sizes or of irregular form, other than exactly circular. Fifth to provide an elastic or yielding edge upon the outside portion of the cap whereby the cap is adapted to be easily applied to the bottle and to closely conform to the shape of thebo'ttle after being placed upon same. Sixth, to provide a cap wherein the elastic corking portion, by means of its expansion within the bottle, shall cause the cap to be drawn tightly down upon the lip of the bottle.

'Iattain the above objects by the construction illustrated in the accompanying" draw-- ing, which therefore becomes a part of this application for Letters Patent, and in which: I

Figure 1. is an elevation of a bottle with the cap in place, being partially broken away to illustrate theconstruction. Fig. 2. is a sectional view of the cap. Fig. 3. is an elevation of the inside portion of the-cap. Fig. 4. is a fragmentary portion of the cap upon an enlarged scale.

Like characters indicate like parts throughout-the several views of the drawing, in which:

Numeral 1 is the bottle, having an enlarged and rounded lip 2 surrounding the mouth, a recessed or dovetailed interior sur-..

milk bottle of commerce, are therefore well known to the art and require no further description or illustration.

The cap is formed of a disk portion 5 of even thickness, having an edge portion 6 turned down over the lip 2 of the bottle.

Integrally attached to the inside of the disk portion 5 is a corking portion 7, adapted to enter the m0uth,of the bottle and securely cork same by expanding into the dovetailed portion 3 of the bottle. Said corking portion 7 is of annular construction as shown in Figs. 2 and 3, and thus by means of the natural elasticity of portions 5 and 7 may assume a shape other than circular if the configuration of the orifice in the bottle requires it. The corking portion is provided with a recessed or dovetailed face 8 adapted to enter the corresponding recessed or dovetailed'portion of the bottle, and to fit tightly against the surface 3 of the bottle. The elasticity of the corking member 7, due to its annular-construction, causes the same to expand in all directions radially and normally to the axis of the bottle, into the recess in the bottle-neck, this causing the dovetailed face 8 of the corking member to contact with the dovetailed face 3 of the bottle. The contact of these dovetailed faces, under the expanding force of the corking member, produces a component force parallel to the bottle axis, which component forces the disk portion of the cap upon the bottle lip.

An annular groove 9 is provided upon the periphery of the corking portion 7 immediately adjacent the disk portion 5, for the purpose of providing some elasticity at the point of juncture of the portion 7 with portion 5. p

The turned down portion 6 of the disk is rendered elastic or yielding by oppositely disposed indentures 10, each indenture passing partially through the thickness of portion 6, as shown in Fig. 4, and upward toward the top of the cap as shown in Figs. 1 and 2.

My invention may be constructed of any material and made of any size deemed suitable for such a device. As a preferred. method of construction I cast the cap partially to form from any desired and suitable material adapted to be finely divided, and when so divided. carried in suspension in a liquid, as what is known commercially as liquid paper pulp. I finish the cap in dies which give the corking portion 7 the required finished shape, and also provide the incisions in portion 6.

While I have illustrated a preferred form of construction and combinations of elements considered essential in materializing my invention, I wish to include in this application all mechanical equivalents and substitutes that may be fairly considered to come within the scope and purview of my invention as herein described and as defined in the appended claims.

Having thus described my invention so that others skilled in the art may be enabled to constructand use same, What I claim as new and wish to secure by Letters Patent, 1s:

1. In a device of the character described, a cap, comprising a flat disk, an edge member turned substantially normal to said disk, said edge'member being rendered elastic or yielding by means of indentures therein, an annular corking member integrally attached to said disk, said corking member being rendered elastic or yielding by means of its annular construction, substantially as described.

2. In a device of the character described, a cap, comprising a flat disk, an annular edge portion integrally attached to said disk and forming a dish shaped contour therewith, said edge portion being rendered elastic or yielding by means of indentures therein, an annular corking member integrally attached to said disk within said edge portion, said corking member havinga dovetailed outer periphery and a groove upon the outer periphery intermediate said dovetailed portion and said disk, substantially as described.

3. A bottle cap comprising inone piece a disk, an annular edge portion turned substantially normal to said disk for the purpose of embracing'the lip of a bottle, said edge portion being rendered elastic or yielding by means of indentures therein, said indentures upon the outer surface of said edge disk and said corking member, said connecting member having a groove in the outer peripheral face thereof.

In testimony whereof, I claim the above as my own, I herewith aflix my signature in the presence of two witnesses.

EVERETT L. BLAKEISLEE. Witnesses DAVID E. LOFGREN, ESTHER SODERGREN. 

